Stack Overflow counts 43.6% of its 2025 survey respondents as TypeScript users. GitHub counts 2,636,006 monthly TypeScript contributors in August 2025, the most of any language on the platform.
This page sets out the TypeScript adoption rate by respondent group, share of code written, GitHub activity and stated intent to adopt, with each source’s own definition attached.
TypeScript Adoption Rate
What Share of Developers Worked in TypeScript in 2025?
43.6% of respondents to Stack Overflow’s 2025 language question did extensive TypeScript work in the past year. That question drew 31,771 responses.
Professional developers reported 48.8% and people learning to code reported 31.9%. The 2024 edition put the same three groups at 38.5%, 43.4% and 26.1%.
The 2025 language question drew 31,771 responses against 60,171 in 2024. The group list changed too: 2024 included “Other Coders”, while 2025 added two AI-user groups.
TypeScript ranked sixth among all 2025 respondents, behind Bash/Shell at 48.7% and ahead of Java at 29.4%. PHP sat at 18.9%, and its own trends are covered in these PHP usage and demographic figures.
| Respondent group | 2024 | 2025 | Responses 2024 | Responses 2025 |
|---|---|---|---|---|
| All respondents | 38.5% | 43.6% | 60,171 | 31,771 |
| Professional developers | 43.4% | 48.8% | 45,566 | 24,759 |
| Learning to code | 26.1% | 31.9% | 6,651 | 2,564 |
Source: Stack Overflow Developer Survey, 2024 and 2025 editions, opt-in respondents reporting extensive development work in the past year
JavaScript vs. TypeScript Adoption Rate Across Five Respondent Groups
JavaScript leads TypeScript in all five 2025 groups. Its highest reading, 70.5%, comes from professionals who use AI, and more on the parent language sits in this JavaScript market share breakdown.
TypeScript passes 50% in one group only: Professionals that Use AI, at 51.4%. Learners show the widest gap, with 62.8% using JavaScript and 31.9% using TypeScript.
AI-using subgroups post higher TypeScript readings than their parent groups: 51.4% against 48.8% for professionals, and 35.1% against 31.9% for learners. The survey does not give a reason.
| Respondent group | TypeScript | JavaScript | Responses |
|---|---|---|---|
| All Respondents | 43.6% | 66% | 31,771 |
| Professional Developers | 48.8% | 68.8% | 24,759 |
| Learning to Code | 31.9% | 62.8% | 2,564 |
| Professionals that Use AI | 51.4% | 70.5% | 20,810 |
| Learners that Use AI | 35.1% | 65.9% | 1,945 |
Source: Stack Overflow Developer Survey 2025, programming languages question, multi-select, opt-in respondents
2,636,006 Monthly Contributors Put TypeScript First on GitHub
| Rank 2025 | Language | Contributor gain | Growth, Aug 2024 to Aug 2025 |
|---|---|---|---|
| 1 | TypeScript | ~1,054,015 | 66.63% |
| 2 | Python | ~850,579 | 48.78% |
| 3 | JavaScript | ~427,148 | 24.79% |
| 4 | Java | ~174,705 | 20.73% |
| 5 | C# | ~136,735 | 22.22% |
Source: GitHub Octoverse 2025, distinct monthly contributors, August 2025 compared with August 2024
TypeScript passed Python by about 42,000 contributors in August 2025, the first month it ranked first. GitHub ranks languages by distinct monthly contributors who committed code, a count of accounts rather than a survey share.
C# added about 136,735 contributors, up 22.22%. Its enterprise footprint is tracked in these C# developer and market share statistics.
GitHub attributes TypeScript’s rise to frameworks that scaffold projects in TypeScript by default and to AI-assisted coding that benefits from stricter types. It cites a 2025 study that found 94% of LLM-generated compilation errors were type-check failures.
Octoverse also counted more than 180 million developers on GitHub over the same year. Other platform-wide totals appear in this web development statistics roundup.
New Repositories and AI-Tagged Projects, 2025 Octoverse Year
TypeScript was the primary language of 5,394,256 new repositories, third behind JavaScript and Python. Its 78.10% growth was the highest of the six core languages GitHub listed.
| Language | New repositories, Sep 2024–Aug 2025 | Growth, Jan–Aug 2025 vs Jan–Aug 2024 |
|---|---|---|
| JavaScript | 9,345,046 | 14.57% |
| Python | 9,261,587 | 53.41% |
| TypeScript | 5,394,256 | 78.10% |
| Java | 3,520,215 | 9.35% |
| C++ | 1,701,552 | 11.82% |
| C# | 1,478,463 | 10.61% |
Source: GitHub Octoverse 2025, repositories counted under one primary language each
Java grew 9.35%, the slowest rate in the table, and its wider picture is in these Java developer trends.
Inside AI-tagged repositories, TypeScript reached 85,746 (+77.9%), just behind JavaScript at 88,023 (+24.8%). Python led with 582,196 (+50.7%).
Source: GitHub Octoverse 2025, AI-tagged repositories, 2025 Octoverse year (September 2024 to August 2025)
How Deep Does TypeScript Adoption Go Inside JavaScript Codebases?
State of JS 2025 asked how respondents split their time between JavaScript and TypeScript on a nine-point scale. Of 10,934 people who answered, the largest single group, 4,367, writes only TypeScript.
Another 2,972 sit one step below full TypeScript. At the other end, 661 respondents write no TypeScript at all.
The average share of code written in TypeScript was 77% in 2025, against 74% in the 2024 edition. The survey is opt-in, so these figures describe its respondents only.
| Metric | State of JS 2024 | State of JS 2025 |
|---|---|---|
| Respondents to the question | 11,435 | 10,934 |
| Write 100% TypeScript | 3,936 | 4,367 |
| Split 50/50 | 625 | 578 |
| Write 0% TypeScript | 915 | 661 |
| Average share of code in TypeScript | 74% | 77% |
Source: State of JavaScript 2024 and 2025 (Devographics), JavaScript/TypeScript balance question, opt-in respondents
The 2024 edition also reported that 67% of respondents write more TypeScript than JavaScript. Static typing was the most-cited build-step advantage in 2025, picked by 7,891 of 10,525 respondents.
Source: State of JavaScript 2024 (usage section) and 2025 (build step advantages, multi-select)
Admired Score Down to 58%: Intent Signals Behind the TypeScript Adoption Rate
| Language | Admired 2024 | Admired 2025 | Desired 2024 | Desired 2025 |
|---|---|---|---|---|
| TypeScript | 69.5% | 58% | 33.8% | 31.9% |
| JavaScript | 58.3% | 46.8% | 39.8% | 33.5% |
| Python | 67.6% | 56.4% | 41.9% | 39.3% |
| Rust | 82.2% | 72.4% | 28.7% | 29.2% |
Source: Stack Overflow Developer Survey, 2024 and 2025 editions. Admired: users who want to keep using the language. Desired: respondents who want to use it next year.
Admired scores fell for all four languages between the two editions, so the TypeScript drop is not isolated. TypeScript still ranked above Python and JavaScript on admiration in both years.
JetBrains surveyed 24,534 developers from April to June 2025 and found 6% intend to adopt TypeScript next. Go (11%) and Rust (10%) topped that list.
The same report placed TypeScript, Rust and Go highest on its 2025 Language Promise Index, which combines growth, stability and willingness to adopt.
Source: JetBrains State of Developer Ecosystem 2025, fielded April–June 2025, responses weighted by geography, employment and language
FAQs
What percentage of professional developers use TypeScript?
48.8% of professional developers in Stack Overflow’s 2025 survey did extensive TypeScript work in the past year, from 24,759 responses. The 2024 edition reported 43.4%. Both figures describe opt-in respondents.
Is TypeScript replacing JavaScript?
Not by survey share. Stack Overflow’s 2025 results show JavaScript at 66% and TypeScript at 43.6%. In State of JS 2025, 4,367 of 10,934 respondents wrote only TypeScript, while 661 wrote none.
Why did TypeScript overtake Python on GitHub?
GitHub credits frameworks that scaffold TypeScript by default and AI-assisted coding that benefits from stricter types. TypeScript passed Python by about 42,000 monthly contributors in August 2025, reaching 2,636,006.
Do developers who use TypeScript want to keep using it?
Most do. Stack Overflow’s 2025 admired score for TypeScript was 58%, down from 69.5% in 2024. JavaScript scored 46.8% and Python 56.4% in 2025.
Does Reddit reflect the real TypeScript adoption rate?
Reddit threads are unmeasured opinion, not a sample. Measured sources show 43.6% of Stack Overflow’s 2025 respondents, 4,367 TypeScript-only State of JS respondents, and first place on GitHub by monthly contributors in August 2025.
